Improvement in calendar-movement for time-pieces



@anni @BW-rr.:

ERVIN HOM-menons, or SHELBYVILLE,'ILL'INoIs Letters .Pate/nt No. {Q-3,088, dated July 27, 1869.

I MRVEMENT IN cALENnARfr/rovsmn'r FOR TIME-PIECES.

The- Schedule referred to in these Lettera Patent and making part of thesame.

Be itjknown that I,Envnr HoMmGHoUs, of Shelhyville, in;A the countyofShelby, and State` of Illinois, have inventedfa new and useful Machinetermed Perpetual Calendar, by whichthe month, the day of the month, andday ofthe weekare easily. kept with correctness; ,and I' do herebydeclare theV following to be a full, clear, and exact description of theconstruction andoperation of the same, reference being had to theannexed drawings, making a part of this specification, inwhicli- Figure1 is an exposedview of the machinery, with one side and the frontdetached.

The nature of my invention consists, in part, ot' a case, A., made ofwood gir-iron; the inside dimensions of the case (and machineryhereinafterto be described, maybe changed proportionately to theV sizeof machine desired,) to be from top to bottom, eight inches; depth,seven inches; width, four inches.I The propellera is madeof metal, twoand one-fourth .inches longfrom the angle b to the point q; the arm b tobe of proper length to extend through the case,- and flnnisha holdfurthe finger, by which the Inachinery is operatedyfor which larm b aslot iscut in the case, as ueanthe front aspossible, three and ouefourthinches from the top, and three-fourths of an' inch long. l At m I cut anotch, one and one-half inches from b, to receive the stop M. At n Ialso 'cnt a notch, to receivethe wire spring L, which forces thepropeller ato. the top of slot mentioned above; the propellerin saidvosition "to rest against a guide, secured inthe case 1n the position topropeller a', asrepresented at q in this position to be free from thewheel O, butin its downward motion tooperate 'in notches -in wheel C,hereinafter to be described. The wheel 0, (to heymade of wood or irou issecured on shaft E, made of. iron, of proper length to snit thewidth ofcase; wheel C 'to-be-two and threefourths inches in diameter, and' twoinches broad uponl its face, said face to be laidoil'- into thirty-iiveequal spaces, upon which I place the numerals, in regular order, fromone to lthirty-one, as represented in the drawings. v j

I next lay olitec-fourth of an' inch at S, ,which is made instay-notches,'corresponding with spaces for the use of propeller a andclick J, preserving, however, the outer circumference, which has but onenotch for the use otstop M, which notch shall be to-M so as to representone in the opening P in front.

I next lay oli" fourrings, three-sixteenths of an inch apart, beginning'at the notches S, which I denominate iirst, 29, second, 28, third, 30,fo'urth, 31 days lings, in each of which I place a pin, r,- piotrudin'gone-fourth of an inch, toface Aone-eighth of an inch, and rounded fromthe back,

These are placed in their respective rings, opposite the spaces 4, 5, 6,and 7.

On the end of wheel O, next to the case, 'I place a coiled spring, asrepresented at Figure 2, the outer end of which is secured in the case,or by cutting a groove inthe wheel C, and attaching a cord, to pass fromthence through the loops y y, with weight attached to it.

sponding with some one space, and-pointing towards the front from above.

The shaft E is to be suspended in each side' of the case, one and`three-eighths inch from the front, and one and seven-eighths inchesfrom the bottom of case. The wheel D is of the same diameter as wheel C,one inch broad upon its face, is likewise laid olf into thirty-liveequal spaces, and the days of ve'weeks successively placed upon it, asseen inthe drawings.' y It is made to slip on' the shaft of wheel O, andis kept close to it by means' of a pin, d, placed through said sha E.

On the en'd adjacent wheel C are thirty-fivenotches, corresponding with'the spaces, and facing the spring referred to inwheel C, so that amotion 'of said wheel C forward, will carry with it wheelD, but canreturn without affecting it.

On the opposite end of wheelD may be provided notches or pins, as seenat c c c, &c.,'(corresponding with said spaces,) into which arnet-alspring, with catch,

as seen at l, operates, which only 'allows the wheel D to -move forward.

Wheel B is secured a shaft, E, of metal, in length to suit the case;the" said -wheel B to he four inches in diameter, and two inchesbroaduponits face.- The face I lay olf into forty-eight equal spaces, and

lthe months, in succession of fouryears', placed thereon; the objectbeingjto-get the four diii'erent lengths: of.' months that occur,including leap-year.

Secured in the case, next to wheel B, I place a spring, which serves toprevent vthe wheel B from a return motion, but does not prevent itsmoving' forward, there being forty-eight notches in the end of wheel B,'facing l the spring referred to.-

I next make forty-eight notches in the face of .wheel- B, at v"I,oueefourth ot' an inch wide,'corresponding with the spaces, andvfa'cingthe check s, into'which check s. moves at the change of .eachmonth, toA prevent wheel B from moving too far.

I next lay oft" said wheel B with -fonr rings, correvents the said wheelC from bounding to an uncertain i dav, as it would otherwise do.

This completes the operation for one month, andas each month isrepresented in its number of days by the pins e e e on wheel 1S, andexposed by their respect-ive springs g g' g g to the pins Vl',representing the same number of days on Wheel C for four years insuccession, (which include all the `diiierentlengths of months thatoecur,) it m'll be seen that 1 have invented, as set forth in thespecific-ations, a perpetual calendar.

Having thus fully described my invention and its operation,

What I e'laim, and desire to secure by Letters Patent of the UnitedStates, is-

l. The wheel B, having on its outer face the months of four years insuccession, and pins e, arranged on the periphery parallel therewith, inthe manner described,

for the purpose of controlling the varying lengths of the months,substantially as set forth.

2. rEhe wheel C, having on its face'the days of the month, the pins Ir,and the notches S, arranged in relation to the wheel D, substantially asdescribed.

3. `The slide G, having springs g, for engagement with pins fr and e ofthe wheels G and B, substantially asdescribed.

4. The dogs i and I, pivoted at k k', and arranged to operate inconnection with slide Gand detent-pawl J, substantially as and for thepurposes described.

5. The combination ofthe actuating-pawl a, wheels B, C, and D, arrangedin relation to each other, and with the slide, check, and springs,substantially as set forth.

Witnesses: ERVIN HOMR-IGHOUS.

J. L. B. ELLIS, HENRY HART.

